Medical tube
CA 2062433 C · Owner: Nissho Corporation · Inventors: Matsumoto, Takashi; Hayashi, Shunichi; Tsujikawa, Hajime
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A medical tube made of an organic polymer having a mechanical loss tangent of at least 0.5 at body temperature and a modulus of transverse elasticity of 1-1000MPa at body temperature. The medical tube of the present invention can be easily inserted into the body, and gives less pain and less feeling of physical discomfort while in the body or during removal from the body.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed March 5, 1992 and granted February 29, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 5, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 5, 2014.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.